Ting, Li, Zhang Man, Ji Yuhan, Sha Sha, Jiang Yiqiong, and Li Minzan. 2015. “Management of CO2 in a Tomato Greenhouse Using WSN and BPNN Techniques”. International Journal of Agricultural and Biological Engineering 8 (4). Beijing, China:43-51. https://ijabe.org/index.php/ijabe/article/view/1572.